#include<stdio.h>

int main()
{
    int a, b, c, d;
    int sum;
    double avg;
    scanf("%d %d %d %d",&a, &b, &c, &d);
    sum = a + b + c + d;
    avg = sum/4.0;
    printf("Sum = %d; Average = %.1f",sum, avg);
    
    return 0;
}